Lock-in Amplifier for detecting 1GHz signals

[john1998]

Hi,

I am trying to make a lock-in amplifier which can detect signals having frequencies near 1GHz. I did not find any circuits which can accomplish this feat. Can anyone help me how to start solving this problem?

As of now, I have been using AD630. It stops working around 32KHz. My focus is to reach higher and higher frequency ranges.

Any help would be very much appreciated!!

 

[filip.amator]

Use ordinary RF mixer as a down converter and then process low frequency signals.